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Motorola PA information needed

Good Evening folks

I got this PA a few weeks ago in a hamfest but couldn't find any information. It had a sticker saying "Motorola 6 mts. Power Amplifier" and that was it (please see attached pictures)
I am building a 6 mts. transverter and looking for the possibility of using this one as an amplifier.
I would appreciate any help.

The Heat-sink design is GE MASTR series .. this unit has been pulled and modified.Identical castings to a 110 watt VHF GE MASTR II mobile unit that I have in garage
This may have come from a mobile unit or a rack-mount repeater radio.

The 9-pin test-set connector (black plug-in connector in photo) is same one used for the GE MASTR II,

Motorola did not use this style of connector and the GE MASTR-PRO series used a different style of test-set connector !!
The MASTR PRO was also a Hybrid PA design using vacuum tubes for drivers and final PA tube.

Thank you for all the information you guys provided me. I remember an old GE VHF transceiver that I had several years ago with a heatsink very similar to this one.
So now I have a much better view on where to direct my search, a GE Mastr II. I was looking at the Repeater Builder site before posting, by the way a fantastic site, but not on the right spot